Malicious PDF — malware analysis report

Static analysis result for SHA-256 58f89f34b4d3cfe5…

MALICIOUS

PDF

42.6 KB Created: 2020-08-15 15:35:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77fdd644ccf4a35a0f80032c9220d5a3 SHA-1: 8c593cc2f18d4b37d47180a861c8778964685c90 SHA-256: 58f89f34b4d3cfe513004d66b871e9dd07684659b0691bdc2ff96cc16fd0f12a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a malicious redirector, ttraff.cc, which is disguised with keywords related to a "canadian food guide pdf". This suggests a phishing or social engineering attempt to lure users to a malicious site. The document also contains a large number of links to Shopify-hosted PDFs, likely an attempt to blend in or leverage SEO tactics for distribution.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/wb?keyword=old%20canadian%20food%20guide%20pdf
    • http://files.skinfitsd.com/uploads/1/3/0/7/130739043/topimeme.pdf
    • https://cdn.shopify.com/s/files/1/0432/1030/9787/files/92613446535.pdf
    • https://cdn.shopify.com/s/files/1/0431/4506/8695/files/xerukepesisidabito.pdf
    • https://cdn.shopify.com/s/files/1/0430/8176/0935/files/general_caste_10_reservation_form.pdf
    • https://cdn.shopify.com/s/files/1/0435/8511/0177/files/55447691310.pdf
    • https://cdn.shopify.com/s/files/1/0435/6076/3555/files/sky_movies_tv_guide_tonight.pdf
    • https://cdn.shopify.com/s/files/1/0439/2943/6315/files/fedex_ltl_bill_of_lading.pdf
    • https://cdn.shopify.com/s/files/1/0431/4575/6821/files/36942625634.pdf
    • https://cdn.shopify.com/s/files/1/0436/0021/6232/files/medazajotorojigixerujive.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/91202225735.pdf
    • https://cdn.shopify.com/s/files/1/0430/8008/9760/files/xotofivavagobuwuxu.pdf
    • https://cdn.shopify.com/s/files/1/0440/3943/8486/files/26850894876.pdf
    • https://cdn.shopify.com/s/files/1/0436/7345/2697/files/gdiplus_dll_missing.pdf
    • https://cdn.shopify.com/s/files/1/0438/3349/1606/files/dopevovu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006916.bin
9e213a5c4fa19fe8d3439a059854e30da2e502377a37f76b3cfa3134e8041278		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6916 5076 bytes
font_01_sfnt_off00007a70.bin
650596b04d5c0c85641adbcc7f4d339db39d37cef1c999215ef455c788d2bd41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A70 10352 bytes

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